package com.itcast.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itcast.constant.MessageConstant;
import com.itcast.entity.Result;
import com.itcast.service.MemberService;
import com.itcast.service.ReportService;
import com.itcast.service.SetmealService;
import com.itcast.utils.DateUtils;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * @className: ReportController
 * @description: TODO 类描述
 * @author: Jng
 * @date: 2022/4/18
 **/

@RestController
@RequestMapping("/report")
public class ReportController {

    @Reference
    MemberService memberService;
    @Reference
    SetmealService setmealService;
    @Reference
    ReportService reportService;

    @RequestMapping("/getMemberReport")
    public Result getMemberReport() {
        Map<String, Object> map = new HashMap<>();
        List<String> months = new ArrayList<>();
        Calendar calender = Calendar.getInstance();//获得日历对象，模拟当前时间
        //计算过去一年的12个月
        for (int i = 0; i < 12; i++) {
            calender.add(Calendar.MONTH, -1); //获得当前时间往前推12个月
            Date time = calender.getTime();
            months.add(new SimpleDateFormat("YYYY.MM").format(time));
        }
        map.put("months", months);

        List<Integer> memberCount = memberService.findMemberCountByMonths(months);
        map.put("memberCount", memberCount);

        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS, map);
    }

    public static void main(String[] args) throws Exception {
        Calendar calender = Calendar.getInstance();//获得日历对象，模拟当前时间
        System.out.println(DateUtils.parseDate2String(calender.getTime()));
        //计算过去一年的12个月
        calender.add(Calendar.MONTH, -12); //获得当前时间往前推12个月
        Date time = calender.getTime();
        System.out.println(DateUtils.parseDate2String(time));

    }

    /**
     * 获取套参数据并且统计
     *
     * @return
     */
    @GetMapping("/getSetmealReport")
    public Result getSetmealReport() {
        Map<String, Object> data = new HashMap();
        List<Map<String, Object>> list = setmealService.countBySetmealName();
        data.put("setmealCount", list);
        return new Result(true, MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS, data);
    }

    @GetMapping("/getBusinessReportData")
    public Result getBusinessReportData() throws Exception {

        Map<String, Object> allData = reportService.getBusinessReportData();

        return new Result(true, MessageConstant.GET_BUSINESS_REPORT_SUCCESS, allData);
    }

    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletRequest request, HttpServletResponse response) {
        try {
            //远程调用报表服务获取报表数据
            Map<String, Object> result = reportService.getBusinessReportData();

            //取出返回结果数据，准备将报表数据写入到Excel文件中
            String reportDate = (String) result.get("reportDate");
            Integer todayNewMember = (Integer) result.get("todayNewMember");
            Integer totalMember = (Integer) result.get("totalMember");
            Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

            //获得Excel模板文件绝对路径
            String temlateRealPath = request.getSession().getServletContext().getRealPath("template") +
                    File.separator + "report_template.xlsx";

            //读取模板文件创建Excel表格对象
            XSSFWorkbook workbook = new XSSFWorkbook(new FileInputStream(new File(temlateRealPath)));
            XSSFSheet sheet = workbook.getSheetAt(0);

            XSSFRow row = sheet.getRow(2);
            row.getCell(5).setCellValue(reportDate);//日期

            row = sheet.getRow(4);
            row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
            row.getCell(7).setCellValue(totalMember);//总会员数

            row = sheet.getRow(5);
            row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

            row = sheet.getRow(7);
            row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数

            row = sheet.getRow(8);
            row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数

            row = sheet.getRow(9);
            row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数
            int rowNum = 12;
            for (Map map : hotSetmeal) {//热门套餐
                String name = (String) map.get("name");
                Long setmeal_count = (Long) map.get("setmeal_count");
                BigDecimal proportion = (BigDecimal) map.get("proportion");
                row = sheet.getRow(rowNum++);
                row.getCell(4).setCellValue(name);//套餐名称
                row.getCell(5).setCellValue(setmeal_count);//预约数量
                row.getCell(6).setCellValue(proportion.doubleValue());//占比
            }

            //通过输出流进行文件下载
            ServletOutputStream out = response.getOutputStream();
            response.setContentType("application/vnd.ms-excel");
            response.setHeader("content-Disposition", "attachment;filename=report.xlsx");
            workbook.write(out);

            out.flush();
            out.close();
            workbook.close();

            return null;
        } catch (Exception e) {
            return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL, null);
        }
    }
}
